Abstract
The paper proposes a motion-sensorless control method for permanent magnet synchronous motor drives when only the DC-link current is measured instead of the motor phase currents. A two-phase pulse-width modulation method is used, allowing the DC-link current to be sampled twice in a switching period at uniform intervals during active voltage vectors. A method is proposed for obtaining the current feedback for vector control, and an adaptive observer is used for estimating the rotor speed and position. The estimation is augmented with a high- frequency signal injection method at low speeds; a modified high- frequency excitation voltage is proposed for better performance. The proposed method enables stable operation of the permanent magnet synchronous motor drive in a wide speed range and under various loads. The effectiveness of the proposed method is demonstrated both by simulations and laboratory experiments.
| Original language | English |
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| Title of host publication | Conference record of the 2007 IEEE Industry Applications Conference Forty-Second IAS Annual Meeting (IAS'07) |
| Pages | 2371-2377 |
| Number of pages | 7 |
| ISBN (Electronic) | 1-4244-1260-9 |
| DOIs | |
| Publication status | Published - 23 Sept 2007 |
| MoE publication type | A4 Conference publication |
| Event | IEEE Industry Applications Society Annual Meeting - New Orleans, LA, United States Duration: 23 Sept 2007 → 27 Sept 2007 |
Conference
| Conference | IEEE Industry Applications Society Annual Meeting |
|---|---|
| Abbreviated title | IAS |
| Country/Territory | United States |
| City | New Orleans, LA |
| Period | 23/09/2007 → 27/09/2007 |
Keywords
- DC-link current measurement
- permanent magnet synchronous machine
- sensorless control
- signal injection